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en:hardware:avr-can:controller [2010/04/05 12:54] mikk.leini removed |
en:hardware:avr-can:controller [2010/12/30 14:16] allan.pettai |
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| ====== Controller ====== | ====== Controller ====== | ||
| - | [{{ :images:hardware:arm-can:main_board_1.jpg?250|Board front view}}] | + | ==== Soldering Parts to the PCB ==== |
| - | [{{ :images:hardware:arm-can:main_board_2.jpg?250|Board back view}}] | + | |
| - | [{{ :images:hardware:arm-can:controller_board_1.png?250|Rendered view}}] | + | |
| - | [{{ :images:hardware:arm-can:main_board_ports.png?250|Overview}}] | + | |
| + | Use the parts list (see appendix) to check if you have all the necessary parts to | ||
| + | build the Autostudy CAN board. Alternatively, the following picture gives an | ||
| + | overview of all the needed parts: | ||
| + | {{ :en:hardware:arm-can:can-v4_parts_1.jpg?500 |Figure 1.1: Parts}} | ||
| - | **MCU** | + | Figure 1.1: Parts |
| - | * Texas Instruments (former Luminary Micro) LM3S5632 | + | |
| - | * 32-bit 50Mhz ARM Cortex-M3 | + | |
| - | * 128 KB flash, 32 KB SRAM | + | |
| - | * CAN 2.0 controller | + | |
| - | * USB 2.0 host/device controller | + | |
| - | **Ports** | + | To solder the parts onto the board in the most efficient manner, parts with smaller |
| - | * 4 x ADC input (0-3 V measuring range) | + | height should be added first. Use the part list for reference. The first parts to be |
| - | * 4 x PWM output (drives up to 600 mA load) | + | soldered on to the board are the resistors and diodes. |
| - | * 2 x CAN connector on 1 bus (10 pin header) | + | |
| - | * 1 x SPI | + | |
| - | * 1 x I2C | + | |
| - | * 1 x UART | + | |
| - | * 1 x JTAG (20 pin header) | + | |
| - | * 1 x USB device / host (Micro-AB) | + | |
| - | + | ||
| - | Every pin has IO functionality (except PWM) | + | |
| - | ADC and PWM have 3 pin headers with ground and +5 V | + | |
| - | **On-board features** | + | {{:en:hardware:arm-can:can-v4_1.jpg?250|Figure 1.2: Step 1}} |
| - | * 1 x Power LED indicator | + | {{ :en:hardware:arm-can:can-v4_2.jpg?250|Figure 1.2: Step 2}} |
| - | * 1 x 350 mW RGB LED | + | |
| - | * 1 x Push-button | + | |
| - | **Electrical** | + | Figure 1.2: Step 1+2 |
| - | * Supply voltage 5 ± 0.25 V | + | |
| - | * Powered from CAN bus, DC jack or USB device port | + | |
| - | * Reverse voltage and overcurrent (3 A) protection | + | |
| - | **Physical** | + | After that, solder the oscillators (Q1, Q2), small capacitors (C1-C4) and the IC |
| - | * Dimensions 60 x 50 x 12 mm | + | sockets onto the board. When soldering the IC sockets, the location of the IC |
| - | * Weight ~18 g | + | socket’s notched ends have to match with the labels on the PCB. Buttons (KEY1, |
| - | * Optional housing (increases height) | + | KEY2, KEY3, RESET) and LED (LED1, LED2, LED3, PWR-LED) are the next |
| + | parts to be added subsequently. | ||
| + | {{:en:hardware:arm-can:can-v4_3.jpg?250|Figure 1.3: Step 3}} | ||
| + | {{ :en:hardware:arm-can:can-v4_4.jpg?250|Figure 1.3: Step 4}} | ||
| + | Figure 1.3: Step 3 + 4 | ||
| - | ===== Connecting modules ===== | + | Solder pin headers, electrolytic capacitor (C5), DC jack and USB jack onto the |
| + | board. | ||
| - | - Connect modules over the CAN bus with ribbon-cable | + | {{:en:hardware:arm-can:can-v4_5.jpg?250|Figure 1.4: Step 5}} |
| - | - Connect peripheral devices with boards (servo motor, sensor, user interface, ...) | + | {{ :en:hardware:arm-can:can-v4_6.jpg?250|Figure 1.4: Step 6}} |
| - | - Connect USB cable with PC and programmable CAN board | + | |
| - | - Connect power supply (only with one board) | + | |
| - | {{:images:hardware:arm-can::arm-can_connection.jpg?500|}} | + | |
| + | Figure 1.4: Step 5 + 6 | ||
| + | In the last step, put the 4 IC (voltage regulator, Atmega32, CAN controller, CAN | ||
| + | transceiver) into their corresponding sockets. The orientation of the IC has to | ||
| + | match the orientation of the IC sockets (see the IC’s notched ends). Jumpers | ||
| + | JP1, JP2, TERM are to be placed on the pin headers (2x1). Please note that the | ||
| + | jumpers TERM and JP1 will not be used until later. Therefore, they must not (!) | ||
| + | connect the two pins of their pin headers (see below). The soldering process is | ||
| + | now complete and the board should be tested. | ||
| + | {{ :en:hardware:arm-can:can-v4_7.jpg?250 |Figure 1.5: Step 7}} | ||
| + | Figure 1.5: Step 7 | ||
| + | |||
| + | ==== Testing the Board ==== | ||
| + | |||
| + | Warning: The device can be powered by 3 different means: (1) through the use | ||
| + | of the provided AC/DC-adaptor (2) from the PC over USB (3) over the CAN Bus | ||
| + | from another CAN board that is being powered by one of the above mentioned | ||
| + | means. The USB cable and the AC/DC-adaptor should not be plugged in simul- | ||
| + | taneously (!). If 2 boards are connected via CAN, jumper JP1 can be used to | ||
| + | power one board while the other board is powered by either (1) or (2). In this | ||
| + | case, don not connect the secondary board to any other power source (!) | ||
| + | |||
| + | {{ :en:hardware:arm-can:aufbau1.jpg?500 |Figure 1.6: Structure}} | ||
| + | |||
| + | Figure 1.6: Structure | ||
| + | |||
| + | Example of three CAN-boards connected with ribbon cables, one powered by | ||
| + | USB and the other two boards indirectly powered via CAN Connect the provided AC/DC-adaptor to the board’s DC jack. If the red PWR- | ||
| + | LED doesn’t work, unplug the AC/DC-adaptor and check the orientation of the | ||
| + | voltage regulator IC first. If the IC is positioned correctly, plug the adaptor back | ||
| + | in and use a multimeter to confirm the correct voltage output of 5V between the | ||
| + | voltage regulator’s ouput pins 1 and 4 (FB and GND, respectively). Unplug the | ||
| + | AC/DC-adaptor and use the USB cable to connect the board to the PC. The red | ||
| + | PWR-LED indicates that the device is functioning. | ||
